Behavior of the notification API

In one of our projects we included the new and very useful notifications API.
It generally works well, but we encountered a rather strange issue:
When a user clicks on the notification bell, all notifications are marked as read, thus the red dot disappears from all of them.
The expected behavior should be the dot to disappear only for the notifications that are clicked.
Are we doing something wrong, or this is the way it is coded?